Asphaltene deposition inhibitor composition as well as preparation method of same

A technique of deposition inhibition and composition, which is applied in the field of asphaltene deposition inhibitor composition and its preparation, can solve the problems of low efficiency of asphaltene deposition inhibition, achieve good inhibition effect, broad market prospect, and the effect of inhibiting precipitation and deposition

Inactive Publication Date: 2017-12-01
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It shows that the inhibitory effect of veg

Method used

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  • Asphaltene deposition inhibitor composition as well as preparation method of same
  • Asphaltene deposition inhibitor composition as well as preparation method of same
  • Asphaltene deposition inhibitor composition as well as preparation method of same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] Place the three-necked bottle in a constant temperature water bath at 60°C, add 30g of corn oil and 30g of tung oil to the three-necked bottle in turn, stir for 10 minutes under the condition of a constant temperature water bath at 60°C, mix well, and then add 35g of nitrogen-containing sulfur and oxygen heteroatoms Compound C 105 h 150 SN 2 o 2 , stirred for 20min, then added 5g enhancer C 12 f 25 C 6 h 4 SO 3 K, stirred for 30 min, and cooled to room temperature to prepare the inhibitor composition.

[0066] When the weight content of the inhibitor composition in the crude oil mixture is 300ppm, the asphaltene inhibition rate is 88%.

Embodiment 2

[0068] Place the three-necked bottle in a constant temperature water bath at 60°C, add 15g of rapeseed oil, 15g of peanut oil, and 19g of corn oil to the three-necked bottle in turn, stir for 15 minutes under the condition of a constant temperature water bath at 60°C, mix well, and then add 45g of Nitrogen sulfur oxygen heteroatom compound C 110 h 140 SN 2 o 2 , stirred for 15min, then added 6g enhancer C 11 f 23 C 6 h 4 SO 3 Na, stirred for 30 min, and cooled to room temperature to prepare the inhibitor composition.

[0069] When the weight content of the inhibitor composition in the crude oil mixture is 300ppm, the asphaltene inhibition rate is 89%.

Embodiment 3

[0071] Place the three-necked bottle in a constant temperature water bath at 60°C, add 25g of grain oil and 30g of peanut oil to the three-necked bottle in turn, stir for 15 minutes under the condition of a constant temperature water bath at 60°C, mix well, and then add 38g of nitrogen-containing sulfur and oxygen heteroatoms Compound C 108 h 155 SN 2 o 2 , stirred for 20min, then added 7g enhancer C 12 f 25 C 6 h 4 SO 3Na, stirred for 30 min, and cooled to room temperature to prepare the inhibitor composition.

[0072] When the weight content of the inhibitor composition in the crude oil mixture is 300ppm, the asphaltene inhibition rate is 87%.

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Abstract

The invention relates to an asphaltene deposition inhibitor composition which includes plant oil, a heteroatom compound containing nitrogen, sulfur and oxygen, which is represented as the general formula (I): CnHmSN2O2, and a synergist represented as the general formula (II): C<t>F<2t+1>C6H4SO3X. The invention also relates to a preparation method of the inhibitor composition. In the method, raw materials are biodegradable, are environment-friendly and are low in cost. The invention further relates to an application of the inhibitor composition in crude oil exploitation and gathering and transportation. The asphaltene deposition inhibitor composition is higher than 87% in asphaltene inhibition rate, can significantly inhibit separation and deposition of the asphaltene in crude oil, and has great market prospect.

Description

technical field [0001] The invention belongs to the technical field of crude oil asphaltene deposition inhibitors, and in particular relates to an asphaltene deposition inhibitor composition and a preparation method thereof. Background technique [0002] During crude oil production, changes in pressure, temperature, fluid composition, and shear rate can induce precipitation and deposition of asphaltenes. These changes may be caused by various production processes, including primary oil recovery, injection of natural gas or carbon dioxide, acid treatment, and mixed production of incompatible fluids. Throughout the production system, asphaltenes can accumulate in many areas, from within the formation to pumps, tubing, wellheads, safety valves, flowlines, and surface facilities. The formation of organic solid deposits is therefore a serious problem affecting the petroleum industry, causing many troubles to production operations, such as complete or partial blockage of pipeline...

Claims

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Application Information

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IPC IPC(8): C09K8/524
CPCC09K8/524
Inventor 吴川张祖国佘跃惠张凡苏建政李建平柯文奇张喜顺
Owner CHINA PETROLEUM & CHEM CORP
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